• In
1978, President Jimmy Carter announced that he was deferring development of the
neutron bomb, a high-radiation weapon.

• In
1983, space shuttle astronauts Story Musgrave (above) and Don Peterson went on the
first U.S. spacewalk in almost a decade as they worked in the open cargo bay of Challenger for
nearly four hours.

• Ten years ago: U.S. troops in more than 100 armored vehicles rumbled through
downtown Baghdad, seizing one of Saddam Hussein’s opulent palaces and toppling a 40-foot statue of
the Iraqi ruler.

• Five years ago: Anti-China protesters disrupted the Olympic torch relay in
Paris, at times forcing Chinese organizers to put out the flame and take the torch onto a bus to
secure it.

• One year ago: Pakistani soldiers dug into a massive avalanche in a mountain
battleground close to the Indian border, searching for 140 people buried when the wall of snow
engulfed a military complex; there were no survivors.